Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The early reported pseudo-first-order reaction kinetics of the polymer-supported metallic nanocatalysts for the model reaction of p-nitrophenol (p-NP)/NaBH4 were probably oversimplified. Here a detailed study of p-NP reduction by NaBH4 in the presence of the raspberry-like poly(allylamine hydrochloride)-modified polym…
Liquid crystalline elastomers (LCEs) exhibit a number of remarkable physical effects, including the unique, high-stroke reversible mechanical actuation when triggered by external stimuli. This article reviews some recent exciting developments in the field of LCE materials with an emphasis on their utilization in actua…
Concrete is the most widely used material in the world and, because of the large volume used, the production of cement, the main component of concrete, is responsible for a high CO2 emission. To reduce the quantity of CO2 emitted, one solution is to substitute a part of cement by supplementary cementitious materials,…
A simple one-step method for fabricating graphene-based hydrogels (GHs) with interconnected 3D networks using Cu nanoparticles was developed. During this process, graphene oxide (GO) was reduced by Cu nanoparticles to form reduced GO (rGO) which then self-assembled to form GHs. Meanwhile, the Cu nanoparticles were oxi…
Delicate α-Fe2O3 multi-shelled hollow spheres have been prepared by a simple and scalable spray drying method followed by annealing in air. The resulting material shows high specific capacity, good cycling stability, and excellent rate performance in lithium ion battery applications.
Exploring novel low-cost cathodes for sodium-ion batteries, here we unveil β-Na2MnP2O7, a new pyrophosphate cathode. Stabilizing into a triclinic structure, it was found to be electrochemically active, delivering a discharge capacity approaching 80 mA h g−1 along with the highest ever Mn3+/Mn2+ redox potential located…
Biochar, a by-product from the fast pyrolysis of pine wood, was used as the support material for the synthesis of carbon-encapsulated iron nanoparticles. The nanoparticles were characterized for physicochemical properties by multiple morphological and structural methods (e.g., SEM, TEM, XRD, FTIR, and TPD). The Fische…
The garnet-type Nb-doped cubic lithium ion-conducting solid Li 6.75-x La 3 Zr 1.75 Nb 0.25 O 12–0.5x (LLZ-Nb) was prepared with 0.46 wt% Al 2 O 3 using a sol-gel precursor. LLZ-Nb sintered at 1,150°C for 36 h exhibited a bulk conductivity of 6.13 × 10 −4 S cm −1 and a grain boundary conductivity of 7.76 × 10 −3 S cm −…
Mechanochemical dry conversion that only uses zinc oxide and an imidazole ligand proved to be effective and reliable for fabrication of a zeolitic imidazolate framework with a polycrystalline grain boundary and a core-shell structure. The zinc oxide crystals are converted into a zeolitic imidazolate framework to a dep…
Three new functionalized UiO-66-X (X = -SO(3)H, 1; -CO(2)H, 2; -I; 3) frameworks incorporating BDC-X (BDC: 1,4-benzenedicarboxylate) linkers have been synthesized by a solvothermal method using conventional electric heating. The as-synthesized (AS) as well as the thermally activated compounds were characterized by X-r…
A ZnO1−x photocatalyst with surface oxygen vacancies was fabricated by the controllable reduction of H2. After surface oxygen vacancies were introduced into the ZnO photocatalyst, a high visible-light-driven activity and photocurrent was produced. The UV activity for the degradation of MB and the photocurrent was enha…
Reduced graphite oxide–NiFe2O4 (RGO–NiFe2O4) composites were synthesized by adding different amounts of NH3·H2O into a mixed aqueous solution of graphite oxide, Ni(NO3)2 and Fe(NO3)3 at room temperature. NH3·H2O was used to adjust the synthesis system's pH value. The morphology and the microstructure of the as-prepare…
Hetero-element doping (e.g., N, F, C) of TiO2 is inevitably accompanied by significantly increased structural defects due to the dopants' nature being foreign impurities. Very recently, in situ self-doping with homo-species (e.g., Ti(3+)) has been emerging as a rational solution to enhance TiO2 photoactivity within bo…
Regardless of its successful clinical applications, load-bearing implant applications of hydroxyapatite (HA) remain problematic due to its intrinsic property limitations. Recent findings of the promising biocompatibility of graphene imply the possibilities of it being potentially used as additives for HA-based composi…
This review summarizes the research progress made so far on electret air filters used for separation of airborne particles from complex air stream. A set of different categories of these filters are delineated and the methods of manufacturing of these filters are described. The principles and mechanisms of filtration…
As a crucial component, carbon substrates with appropriate porous structures are highly desired in developing sulfur–carbon cathodes for Li–S batteries with superior performance. Here we show that the electrochemical performance of the sulfur–carbon cathode can be easily adjusted by tuning the pore structure of the ca…
This perspective discusses the principles of the multistate scenario often encountered in transition metal catalyzed reactions, and is organized as follows. First, several important theoretical concepts (physical versus formal oxidation states, orbital interactions, use of (spin) natural and corresponding orbitals, ex…
Most materials have a unique form optimized for a specific property and function. However, the ability to reconfigure material structures depending on stimuli opens exciting opportunities. Although mechanical instabilities have been traditionally viewed as a failure mode, here we exploit them to design a class of 2D s…
A series of highly porous nitrogen doped porous carbons (NPCs) have been successfully prepared using a novel porous polyimine as the precursor. The resulting NPCs have a high specific surface area of up to 3195 m2 g−1, high pore volume and micropore volume (up to 1.58 and 1.38 cm3 g−1, respectively), narrow micropore…
Understanding of cellular regulatory pathways that involve lipid membranes requires the detailed knowledge of their physical state and structure. However, mapping the viscosity and diffusion in the membranes of complex composition is currently a non-trivial technical challenge. We report fluorescence lifetime spectros…